05-23: Hybrid Closed-Circuit Cooling Tower Solves a Water Availability ProblemThe owner operator of a Canadian air separation plant had planned to install an open cooling tower for summer heat rejection, and an air cooled heat exchanger for winter operation, because water for evaporation is unavailable at the plant site in the winter. By taking advantage of hybrid, wet dry closed circuit cooling tower technology, the owner is now able to handle the heat rejection requirements with a single piece of equipment that provides the